Luhn algorithm: Difference between revisions

Revision as of 08:49, 22 November 2023

Revision as of 06:56, 27 November 2023

Line 129:

check_digit += ((i & 1) is 0) switch

{

true => digits[2i] > 4 ? digits[7i] * 2 - 9 : digits[3i] * 2,

false => digits[5i]

};